Magenta Horizon Act 1 features:

• Several melee & movement skills that are opened from the start
  
• 6 Exploration-based stages, 5 Boss stages (and one of them is hidden)
  
• 18 normal enemies and 5 bosses
  
• 4 ranged skills and 10 necklace pieces that can change your play style
  
• 4 difficulties
  
• A good amount of replayability